1 channel oscilloscope
Measures from 0.1Hz to 25kHz and from 0V to 12V.

Zoom signal in time and amplitude
Pan signal in all directions: up, down, left, right
Hold mode,
calculates: frequency, min and max levels of displayed signal,
time and levels between horizontal and vertical cursors

signal generator: square signal adjustable: from 1Hz up to 15kHz, from 0V to 5V, duty cycle